Who Was Baek Dong-su? The Joseon Swordsman Behind Korea's Great Martial Arts Manual

Baek Dong-su (1743–1816) was a military officer and martial artist of Korea's Joseon dynasty, best known as one of the three compilers of the Muyedobotongji, the illustrated manual of martial arts commissioned by King Jeongjo. He was celebrated as a master of the sword and spear, yet for years he was kept out of office because of his family background. Today many Koreans know him from a 2011 television drama, but his real story is about talent struggling against a rigid social system.

Born into the "wrong" lineage

Joseon society was strictly hierarchical. Sons born to secondary wives or concubines, and their descendants, were classed as seoja and faced severe limits on official careers, however capable they were. Baek Dong-su belonged to this group: his grandfather had been born to a secondary line, which placed the whole family in that status.

That background shaped his life. It also connected him to a remarkable circle of scholars in the same position, including Yi Deok-mu, who was his brother-in-law, and Park Je-ga, both brilliant thinkers who also struggled against the barriers of birth.

Passing the exam, but no post

In 1771 Baek passed the military service examination and was named to a junior position, but because of his status and the shortage of posts, he did not actually receive a job. For a skilled fighter, it was a frustrating situation: officially qualified, yet left waiting.

King Jeongjo's new guard

Change came with King Jeongjo, a reforming monarch who wanted to strengthen royal power and promote capable people regardless of birth. Jeongjo created a new royal guard unit, the Jangyongyeong, and Baek was recommended to it as one of the top experts in swordsmanship and spearmanship. He went on to command companies in the Jangyongyeong and other units.

The Muyedobotongji

In 1789–1790, King Jeongjo ordered Yi Deok-mu, Park Je-ga and Baek Dong-su to compile a comprehensive martial arts manual. The scholars handled research and writing; Baek contributed the practical expertise of a fighting master. The result, the Muyedobotongji, published in four volumes, expanded on the eighteen weapons systems of an earlier manual and added methods of mounted combat.

Its first three volumes focus mainly on spears, polearms and swordsmanship, while the fourth covers unarmed combat, staffs and flails, and fighting on horseback, all illustrated with figures showing each movement. The manual is widely regarded as a key source for understanding Korean military science in the eighteenth century.

Magistrate, exile and return

Baek later served as a local magistrate in Bini (1792) and Bakcheon (1802). In 1806 he was convicted of corruption and exiled, but he was later reinstated and in 1810 became vice director of the office that managed military equipment. His career, like many in Joseon politics, had both rises and falls.

From history to television

In 2011 the Korean broadcaster SBS aired a drama titled Warrior Baek Dong-soo, a fictionalised story of his life starring Ji Chang-wook. Like most historical dramas, it added a great deal of invention, but it introduced him to a wide audience and renewed interest in traditional Korean martial arts. Today groups who practise reconstructed Joseon martial arts often turn to the Muyedobotongji as their main source.

Learn with Baek Dong-su: English phrases

Phrase	Meaning	Example
a glass ceiling	an invisible barrier that stops people rising	He hit a glass ceiling because of his birth.
to prove your worth	to show you are valuable	She proved her worth in the first month.
a master of his craft	someone extremely skilled	He was a master of his craft.
to get a foot in the door	to get a first opportunity	The new guard gave him a foot in the door.
by the book	following the official rules exactly	They trained by the book, using the manual.

Try this: Write three English sentences about a barrier you or someone you know has overcome, using "a glass ceiling" and "prove your worth".